/ Dictionary / Index T tighten: Meaning and Definition of Find definitions for: tight•en Pronunciation: (tīt'n), [key] — v.t., v.i. to make or become tight or tighter. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: tighten (Thesaurus) tight-assed tight end Related Content Daily Word Quiz: agitated Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language